Induction-heating cooker

An induction-heating cooker comprising:

• a main body outer frame;
• a top plate that is disposed above the main body outer frame and on which a cooking container is placed;
• a heating coil disposed below the top plate to induction-heat the cooking container and having a coil opening;
• an insulation plate on which the heating coil is placed and that has an insulation plate opening below the coil opening:
• a ferrite on which the insulation plate is placed;
• a metallic magnetic shield plate on which the ferrite is placed and that has a magnetic shield plate opening below the insulation plate opening;
• an infrared sensor arranged below the magnetic shield plate opening to detect an infrared ray radiated from the cooking container and passing through the coil opening, the insulation plate opening, and the magnetic shield plate opening;
• a casing having at least a bottom part located below the infrared sensor, a side wall part extended upward from the bottom part so as to surround the infrared sensor, and a casing opening through which the infrared ray can pass and made from an electrically conductive material;
• and
• a spacer intervening between the lower surface of the magnetic shield plate and the upper end of the casing, in contact with the lower surface of the magnetic shield plate and the upper end of the casing, having a spacer opening below the magnetic shield plate opening, and made from a material having electrical insulation.